Role & responsibilities

Job Title: Network Engineer (Voice) L2

Role Overview The Network Engineer (Voice) – L2 provides advanced support for enterprise voice and unified communications settings. This role handles escalated incidents from L1, performs in-depth troubleshooting of VoIP and telephony systems, and ensures high availability, performance, and quality of voice services across the organization.

Key Responsibilities
Provide Level 2 support for voice and unified communications systems
Troubleshoot and resolve escalated issues related to VoIP, IP Telephony, and UC platforms
Monitor voice infrastructure to ensure call quality, uptime, and performance
Analyze and resolve issues such as call drops, latency, jitter, echo, and packet loss
Configure, maintain, and support IP phones, gateways, SBCs, and call managers
Work with network teams to troubleshoot QoS, VLANs, routing, and firewall-related voice issues
Support moves, adds, and changes (MACD)



for voice users and devices
Assist in voice platform upgrades, patches, and migrations
Create and maintain technical documentation, SOPs, and knowledge base articles
Collaborate with vendors and service providers for issue resolution
Ensure compliance with SLAs, security policies, and change management processes

Technical Skills & Requirements
Solid knowledge of VoIP protocols: SIP, RTP, SRTP, H.323
Primary skills: Avaya Call Manager, Contact Center, and Avaya Cloud Office
Secondary skill: Cisco Call Manager
Understanding of QoS, LAN/WAN, VLANs, and network fundamentals
Experience with Session Border Controllers (SBCs) and voice gateways
Familiarity with UC tools such as Cisco Jabber, Webex Calling, or MS Teams Voice
Ability to analyze call flows and packet captures (Wireshark preferred)

📌 Network Engineer Bengaluru
🏢 Wissen Infotech
📍 Bengaluru